code: def __init__(self):
      self.content = None
      self.flush_count = 0
  
file_path: mlflow/tests/utils/test_logging_utils.py
imports: import logging
  import sys
  import pytest
  import mlflow
  from mlflow.utils import logging_utils
  from mlflow.utils.logging_utils import eprint
label_desc: Use image node_id 1 to create a new TestStream object  with example: obj = TestStream()